diff --git a/Library/Homebrew/utils/analytics.rb b/Library/Homebrew/utils/analytics.rb
index 1172462d084fe..c4540961a098a 100644
--- a/Library/Homebrew/utils/analytics.rb
+++ b/Library/Homebrew/utils/analytics.rb
@@ -54,13 +54,12 @@ def deferred_curl(url, args)
         require "utils/curl"
 
         curl = Utils::Curl.curl_executable
+        args = Utils::Curl.curl_args(*args, "--silent", "--output", "/dev/null", show_error: false)
         if ENV["HOMEBREW_ANALYTICS_DEBUG"]
           puts "#{curl} #{args.join(" ")} \"#{url}\""
           puts Utils.popen_read(curl, *args, url)
         else
-          pid = fork do
-            exec curl, *args, "--silent", "--output", "/dev/null", url
-          end
+          pid = spawn curl, *args, url
           Process.detach T.must(pid)
         end
       end
diff --git a/Library/Homebrew/utils/curl.rb b/Library/Homebrew/utils/curl.rb
index a5fe7bab5fde3..fea66022a317d 100644
--- a/Library/Homebrew/utils/curl.rb
+++ b/Library/Homebrew/utils/curl.rb
@@ -65,7 +65,7 @@ def clear_path_cache
         show_error:      T.nilable(T::Boolean),
         user_agent:      T.any(String, Symbol, NilClass),
         referer:         T.nilable(String),
-      ).returns(T::Array[T.untyped])
+      ).returns(T::Array[String])
     }
     def curl_args(
       *extra_args,
@@ -129,7 +129,7 @@ def curl_args(
 
       args << "--referer" << referer if referer.present?
 
-      args + extra_args
+      (args + extra_args).map(&:to_s)
     end
 
     def curl_with_workarounds(